Experimental and numerical study of airflow pattern and particle dispersion in a vertical ventilation duct

► We conducted a CFD and PIV investigation into the airflow in a vertical ventilation duct. ► The predicted and actual flow field results show good agreement. ► The fate of particles is influenced by particle size, particle density and the complexity of the flow. ► The temperature gradient greatly influenced airflow patterns and particle movement. ► Small particles followed the airflow while large particles were deposited at the inlet bend.